Light stick



FIG. 1. Is a perspective view of our light stick, with the dotted line showing being for illustrative purposes only and to which no claim is made and is intended to depict an electrical conduit;

FIG. 2. Is a front elevational view thereof with the right and left side views as well as the rear view being a mirror image thereof;

FIG. 3. Is a bottom plan view thereof; and,

FIG. 4. Is a top plan view thereof. 

The ornamental design for a light stick, as shown and described. 